Electrophoretic studies of multilocus-enzymes (MLEE) and whole-cell
protein (SDS-PAGE) were carried out in order to evaluate the parity
between different methods for the characterization of five Fusarium
species recovered from cotton-growing areas in Egypt by
numerical taxonomy methods. The obtained data revealed that SDS-PAGE
and esterase isozymes are more efficient in grouping isolates in their
respective species while peroxidase and malate dehydrogenase isozyme
has much limited resolution in organizing all isolates in their
respective species-specific clusters. A low correlations was detected
between geographical origin of isolates and genetic diversity. Results
indicate that the estimated inter-specific variation may be more
pronounced with protein markers than with isoyzmes when the two
approaches are applied to the same populations. The level of genetic
variability detected within and between Fusarium spp. accessions with
protein and esterase isoyzmes analysis suggests that it is a reliable,
efficient, and effective marker technology for determining genetic
relationships in Fusarium genus